at what stage we can send the webhook or save data in our database related to the call

It seems likely that you can use LiveKit's webhook events to trigger actions such as saving data to a database. For instance, the

participant_left

event can be used to save call-related data when a participant leaves a room. According to the LiveKit Webhooks documentation, this event provides details about the room and participant, which can be useful for logging or database operations. If you are looking to save data incrementally during a call, you might consider using the

agent_speech_committed

and

user_speech_committed

events, as suggested in a Slack discussion. These events can help you capture and store data in real-time as the conversation progresses. Would you like more detailed guidance on implementing these solutions? Sources: - Slack discussion on saving chat data - LiveKit Webhooks documentation 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

I am getting this error

'SIP REFER was denied

@millions-hair-24956

The error message "SIP REFER was denied" typically indicates that the SIP REFER method, which is used for transferring calls, is not being accepted by the SIP trunk or provider. This could be due to several reasons, such as the SIP trunk not being configured to allow call transfers, or the provider not supporting the REFER method. According to the LiveKit SIP documentation, to successfully use the SIP REFER method for call transfers, you must ensure that your SIP trunk is configured to allow call transfers. If you are using a provider like Twilio, you need to enable call transfers and PSTN transfers in the provider's console. Additionally, ensure that the geographic region is enabled if required by your provider, as noted in a Slack discussion. Would you like more detailed steps on how to configure your SIP trunk for call transfers? Sources: - LiveKit SIP documentation - Slack discussion on enabling geographic region 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

what is this error about

'participant does not exist'

@millions-hair-24956

The error message "participant does not exist" typically occurs when an operation is attempted on a participant who is not currently present in the room. This can happen if the participant has already left the room or if there is a mismatch in the participant identity being referenced. According to a Slack discussion, this error can arise when trying to perform actions like transferring a call or updating metadata for a participant who is no longer in the room. It's important to ensure that the participant identity and room name are correct and that the participant is still connected to the room when performing such operations. Would you like more detailed guidance on troubleshooting this error? Sources: - Slack discussion 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

which events fired when call starts @millions-hair-24956

When a call starts in LiveKit, several events can be triggered depending on the context and setup. Key events include: 1. Room Started: This event is fired when a room is created and the first participant joins. According to the LiveKit Webhooks documentation, this event can be used to trigger actions when a call begins. 2. Participant Joined: This event is triggered when a new participant joins the room. It is useful for tracking when a call effectively starts as participants connect. More details can be found in the LiveKit Webhooks documentation. 3. Track Published: This event occurs when a participant publishes a track (audio or video) to the room, indicating that media is being shared. This is detailed in the LiveKit Webhooks documentation. Would you like more detailed information on handling these events? Sources: - LiveKit Webhooks documentation 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

can you give me the code how can I capture this event "participant_joined" @millions-hair-24956

To capture the

participant_joined

event in LiveKit, you can use the event listener on the

Room

object. Here's a basic example using the LiveKit JavaScript SDK:

import { Room, RoomEvent } from 'livekit-client';

// Create a new room instance
const room = new Room();

// Connect to the room
await room.connect('ws://your-livekit-server', 'your-access-token');

// Set up the event listener for participant joined
room.on(RoomEvent.ParticipantConnected, (participant) => {
  console.log('Participant joined:', participant.identity);
  // Add your logic here, e.g., update UI or notify users
});

This code sets up an event listener for the

ParticipantConnected

event, which is triggered when a new participant joins the room. You can replace

'ws://your-livekit-server'

and

'your-access-token'

with your actual server URL and access token. Would you like more detailed guidance on this implementation? Sources: - https://livekit-users.slack.com/archives/C07FYCB7FRQ/p1731067594.737829 - https://docs.livekit.io/home/server/webhooks/ 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

how can use these events "agent_speech_committed"

To use the

agent_speech_committed

event in LiveKit, you can set up an event listener to capture when the agent's speech is committed to the chat context. This event is useful for logging or processing the final transcription of the agent's speech. Here's a basic example using the LiveKit Python SDK:

from livekit.agents.pipeline import VoicePipelineAgent

# Initialize the VoicePipelineAgent
agent = VoicePipelineAgent(...)

# Define the callback function for the event
def on_agent_speech_committed(msg):
    print("Agent speech committed:", msg.text)
    # Add your logic here, e.g., save to database or update UI

# Register the event listener
agent.on("agent_speech_committed", on_agent_speech_committed)

# Start the agent
agent.start(room, participant)

This code sets up a listener for the

agent_speech_committed

event, which is triggered when the agent's speech is finalized and added to the chat context. You can replace the

print

statement with any logic you need, such as saving the transcription to a database. Would you like more detailed guidance on this implementation? Sources: - LiveKit Python SDK documentation - Slack discussion on using speech committed events 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

which event fired when room created @millions-hair-24956

When a room is created in LiveKit, the

Room Started

event is fired. This event is triggered when a room is initialized, either manually via an API call or automatically when the first participant joins the room. According to the LiveKit Webhooks documentation, this event can be used to perform actions such as logging or initializing resources when a room is created. Would you like more detailed information on handling this event? Sources: - LiveKit Webhooks documentation 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

how can i calculate call time @millions-hair-24956

To calculate call time in LiveKit, you can track the timestamps of when participants join and leave a room. Here's a basic approach: 1. Capture Join and Leave Events: Use the

participant_joined

and

participant_left

events to capture when a participant enters and exits the room. These events provide timestamps that can be used to calculate the duration of the call. 2. Calculate Duration: Subtract the join timestamp from the leave timestamp to get the call duration for each participant. If you need the total call duration for the room, consider the time from when the first participant joins to when the last participant leaves. For example, using JavaScript:

import { Room, RoomEvent } from 'livekit-client';

const room = new Room();
let callStartTime;

// Connect to the room
await room.connect('ws://your-livekit-server', 'your-access-token');

// Listen for the first participant joining
room.on(RoomEvent.ParticipantConnected, (participant) => {
  if (!callStartTime) {
    callStartTime = new Date();
  }
});

// Listen for the last participant leaving
room.on(RoomEvent.ParticipantDisconnected, (participant) => {
  if (room.participants.size === 0) {
    const callEndTime = new Date();
    const callDuration = (callEndTime - callStartTime) / 1000; // in seconds
    console.log('Call duration:', callDuration, 'seconds');
  }
});

Would you like more detailed guidance on implementing this? Sources: - https://livekit-users.slack.com/archives/C07FY8WHGPM/p1733240737.020829 - https://docs.livekit.io/home/cloud/analytics-api/#Examples 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

how can I use this event "participant_connected" @millions-hair-24956

To use the

participant_connected

event in LiveKit, you can set up an event listener on the

Room

object to execute a callback function whenever a new participant joins the room. Here's an example using the LiveKit JavaScript SDK:

import { Room, RoomEvent } from 'livekit-client';

// Create a new room instance
const room = new Room();

// Connect to the room
await room.connect('ws://your-livekit-server', 'your-access-token');

// Set up the event listener for participant connected
room.on(RoomEvent.ParticipantConnected, (participant) => {
  console.log('Participant connected:', participant.identity);
  // Add your logic here, e.g., update UI or notify users
});

In this example, the

ParticipantConnected

event is used to log the identity of the participant who has joined the room. You can replace the

console.log

statement with any logic you need, such as updating the user interface or sending notifications. Would you like more detailed guidance on this implementation? Sources: - Slack discussion on participant events 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

i need example in python related to "participant_connected" @millions-hair-24956

To handle the

participant_connected

event in LiveKit using Python, you can set up an event listener on the

Room

object. Here's an example using the LiveKit Python SDK:

from livekit import rtc
import asyncio

async def main():
    # Create a new room instance
    room = rtc.Room()

    # Define the callback function for the event
    def on_participant_connected(participant):
        print(f"Participant connected: {participant.identity}")

    # Register the event listener
    room.on("participant_connected", on_participant_connected)

    # Connect to the room
    await room.connect("ws://your-livekit-server", "your-access-token")

    # Keep the connection alive
    try:
        while True:
            await asyncio.sleep(1)
    except KeyboardInterrupt:
        print("Disconnecting from room...")
        await room.disconnect()

# Run the main function
if __name__ == '__main__':
    asyncio.run(main())

In this example, the

participant_connected

event is used to print the identity of the participant who has joined the room. You can replace the

print

statement with any logic you need, such as updating a database or notifying other services. Would you like more detailed guidance on this implementation? Sources: - LiveKit Python SDK documentation 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.